wantz



May l0, 1927'.

J. B. WANTZ RAY APPARATUS Filed Feb. 11, 1922 s sheets-sheet 1 May l0, 1927 J; B. WAN-rz X-RAY APPARATUS Filed F'eb.

5 Sheets-Sheet 2 MW lo 1927' J. B. wANTz x-RAY APPARATUS i F'iled F'eb. l1. 1922 5 Sheets-Sheet 5 Mgy 1Qy 1927,

.1.13.l wANTz x-'RAY APPARATUS Filed Feb( l1, 1922 5 Sheets-Sheet 4 May 10,1927.. 1,6%,014

...L B. WANTZ X-RAY APPARATUS Filed Feb. 11. 1922 s sheets-sheet 5 [#zd, 6' W /55 Patented May 10, 1927.

UNITED STATES 1,628,014 PATENT OFFICE.

JULIUS B. VAN'IZ,

or CHICAGO, ILLINOIS, AssIGNOn To VICTOR X-BAY CORPORA- TION, OI CHICAGO, ILLINOIS, A CORPORATION or New YORK.

X-RAY APPARATUS.

Application led February 11, 1922. Serial No. 535,742.

My invention relates to'X-ray apparat-us designed, more particularly, f or use in both fluoroscopic and radiographic worlr, though certain features of the appara-tus may be used in apparatus intended for luoroscopic work only and others in apparatus restricted to use in radiographic work; a-nd my object generally stated is to provide improvements in such apparatus to the end that they may be more economically constructed, be of simplified construction, be adapted for greater flexibility of use under the conditions presented in practice, and in general to adapt the apparatus to better perform the functions'for which such apparatus is provided.

More specifically my objects are to provide, in a fluoroscopic apparatus, for the simultaneous adjustment of the tube and fluorescent screen along the table supporting the patient to be observed; to provide for the shifting of the screen into any desired position relative to the tube in order that the anatomy of the patientmaybe observed from the various positions rendered desirable; to provide, more especially in a structure wherein the table for the patient is mounted to swing in a substantially vertical plane toward and away from substantially horizontal position, a tube-holdingan'd-shield'ing device which shall be of econoinical construction ,and of light weight, thereby to red-ucc the cost of construct-ion and render these parl s readily shiftable and counterweighted by a' relatively light weight; to provide for the swinging of the tube in a plane `len'gllnvise of the tab-le; to provide for the shifting of the screen in a plane generally parallel with the table in order that a screen of a given dimension may present the maximum capacity for use, and shifted, if desired, to a position permitting the operator free access to the patient for manipulation; to provide, inA a combined radiographic and fluoroscopic table, for. the supporting of the plates in a manner adapting the supports to be moved out of a position in, which they obstruct the apparatus for fluoroscopic work, to provide Afor the easy assembly of the counterweights carried by the table-portion of the apparatus, with the parts to be counter-balanced thereby and without requiring skill on the part ofthe one assembling the parts; and other objects as will be mani-fest from the following `description.

Referring to the accompanying drawings:

Figure l is a view in side elevation of a combined luoroscopic and radiographic X-ray' apparatus constructed in accordance with my invention, portions thereof being broken away. Figure 2 is an end view of the apparatus-- Figure 3 lis a plan view thereof withl the tube-stand and the parts at one end of the apparatus shown in plan section. Figure t .is a bottom plan View of the table-top portion of the apparatus and the parts carried thereby. Figure() is an enlarged sectional view taken at the line 5-5 on Fig. 1 and viewed in the direction of the arrows. Figure 6 is an enlarged section taken the line 6 6 on Fig. 4 and viewed in the direction of the arrows. Figure 7 is an enlarged bottom plan view of one of the corner portions ,of the table-top vwith certain parts broken away; and Figure 8, a pla-n view of ,the intermediate .portion of thetable-top and screen showing the latter adjusted into one of the positions it mayV occupy in use.

,In the particular construction shown, the frame for supporting the table-top and the tube-holder is formed `of the upwardly-extending side-frames 9 spaced apart, land connected together at their lower portions .by a bolt 10' surrounded by a spacer-tube 11 located between the frames 9 and at vtheir upper ends by a bolt 12'; upper and lower bars 11iand 15 .at opposite sides of the frame secured at their right hand ends (Fig. 1) in lugs 16 and 17, respectively, to the framesides 9 and at the left-hand ends 'in a crossframe 18, the frames 9 and 18 beingequipsped with casters 19 and 20, respectively. The frame also comprises an end frame structure Connected with the cross-frame 18 andl formed with hollow posts, or masts, 21, as is common in constructions of this hind, for receiving the wires leading to the tubes vhereinafter referred to, and a tube-stand-supporting frame-like structure comprising an upright 22, at the right hand end" of the. apparatus in Fig. 1, provided with acaster 23, and .upper and lower bars 2a and 25 eX- tending lengthwise of the apparatus and connected Vat one end of thestructure with the upright 22, and' at the opposite end of the structure with the cross-frame -18 by' brackets 26 .andV 26a, .the lower .bar 25 'being connected withl the' side-.frame =9 Iby aV bracket 27.

rlhe table-top for supporting the patient is shown at 28 and is pivoted between its ends, preferably to one side of its center, on the bolt l0, adapting the table-top to swing' in a substantially vertical plane between the side-frames 9, the plate-portion of the table-top, viz, the portion thereof on which the patient rests, being constructed `of any suitable material transparent to lil-rays. The table top 28 is provided at one side vith a depending curved bar 30 containing openings 3l at intervals adapted to receive the inner ends of a spring plunger 3la mounted in the frame-sides 9 by means of which the table-top is held in any desired position of adjustment on the crossbolt l2. The table-top comprises the parallel bars 32 shown as provided along their inner edges with ribs 33, and pieces 34 eX- tending crosswise of the table top and to which tl e bars 32 are connected at the ends of the latter, and the upper plate-like portion hereinbefore referred to and upon which the patient is supported, the portion of the table top being disposed in spaced. relation to the bars 32 and being supported from the latter at intervals by means of the depending members 36 arranged at opposite sides of the table.

Generally stated the table-top carries an I-ray tube holder mounted thereon to be moved lengthwise of the table top at the under side thereof, for use in fluoroscopic worlr and a fluorescentscreen supported to extend above the table-top and be movable along` the latter, this screen cooperating with the tube in the holder just referred to and through the medium of which the operator makes the desired observations of the patient, these parts, where the table top is supported in a manner to permit it to be adjusted into different positions in a. substan all vertical plane, as in the construction shown, being suitably substantially counterbalanced, to render these parts movable into dii'erent positions of adjustment, with comparative ease, and without danger of injury to the apparatus. ln the particular construction shown, the tube holder and screen are supported on a carriage represented generally at 37 and shown as formed of a pair of side bars 88 and 39, and cross rods 40 and 4l connected together' and forming a rigid frame-like struct-ure which is located at the under side of the table top 2S, this carriage being provided with grooved rollers 42 and 48 which engage, at their grooves, with the ribs of the bars 32, along which latter they are movable, being held against disengagement therefrom by the engagement of the Walls of the grooves in these rollers, with the ribs 33. The tube-holder for the tube to be used in radiographic work, and located below the portion 35 of the table top, is

in the form of a frame comprising side members 44 extending lengthwise of the table and cross-bars 45 connected at their opposite ends with depending lugs 46 on the side members 44, the side members 44 being provided with laterally-extending portions 47 at which the holder is pivotally supported between its ends on trunnions 48 carried by depending bosses 49 on the side bars 38 and 39, whereby the tube holder now "f being described is pivotally supported at its medial, line on an axis extending crosswise of the table. Mounted on the rods 45 to be movable crosswise of the table in a plane substantially pa allel with the portion 35 of the latter, is a plate-like member 50 equipped at opposed edges with grooved rollers 5l which partially embrace the outer surfaces of the rods 45 and while confining the plate portion 50 thereon, against accidental engagement therefrom, permit the member 50 to be moved along these rods into diiferent positions of adjustment thereon. The member 50 is provided with any suitable means for dependingly supporting thereon the X-ray tube which, in accordance with the construction shown, is confined within a shield represented generally at 52 constructed of current-insulating material such as lead glass, and opaque to X-rays, the tube being held in position through the medium of any suitable form of clamps represented generally at 53 carried by the member 50 and engaging the contracted ends of the shield 52. The portion 50 contains an opening therethrough (not shown) located centrally thereof and with which a cylindrical tube 50a communicates and opposite to which the central portion of the tube in the shieldl 52 extends, the shield also containing an opening registering with the end of the tube 50u, the portion 50 being provided with an upwardly-liaring ray-confining member 54 register.'- ing at its lower open end with the abovereferred-to opening in the portion 50. The apparatus shown is also equipped with shutter or diaphragm mechanism cooperating with the opening in the member 50 under the control of the operator for varying the size of the opening through which the rays emitted from the tube pass to the patient. Such mechanism may be of any suitable form, and, by way of example, the form shown in United States Patent No. 1,242,498 granted to me October 9, 1917, may be employed. The rods, through the medium of which the two sets of shutter or diaphragm members are separately operated, are represented at 55 and 56, and the separately rotatable elements, through the medium of which these rods are operated, are represented at 57 and 58, and supported on a frame formed of the rods 59, a crossbar 60 connected with these rods, and a tuwith the cross-bar 60.

The tube ret-erred to, the ends ot which are shown as projecting beyond the ends of the shield 52, in Fig. 4;, is supported in the shield in any desirable manner as is well understood in the art. The shield 52, in addition to being opaque to X-rays as stated, is also made opaque to ordinary light rays as by surfacing it with a material opaque to ordinary light rays, or providing in the material of which the shield is made a material opaque to ordinary light rays. rFhe shield 52 is shown as formed of two similar sections 62 which abut endwise together adjacent the cent-er of the tube and are secured together through the medium of bolts, one of which is shown at 63 engaging lugs 64, on these sections, the shield being of v substantially the same shape as the X-ray tube located therein, and extending throughout its extent, into relatively close proximity to the tube, whereby the shield, while functioning in a highly desirable manner to prevent the emission of rays from the tube, except through the opening in the pipe 50, thus protecting the operator and maintaining the room in which the apparatus is located, .in relatively dark condition, `necessary for the most eective luoroscopic work, is relatively light in weight, which is a decided advantage in that the supporting parts may be made correspondingly lighter in weight, and in the case 01"' a pivoted table top, as in the construction shown, where it is desired to counterbalance the moving parts, the counterweighting mechanism may be made much lighter in weight.

The fluorescent screen, hereinbetore referred to and which Vmay ybe oi' a construction as commonly provided, isrepresented at 65 and is shown as mounted in a frame 66 which is supported from the carriage '37 by the following described construction. rlhe construction referred vto comprises a pair ot' `parallel rods 67 rwhich extend cross- -wise of the apparatus and are conined, and

supported, in guides 68 at the underside of the side member 39 of thecarriage 37, setscrews 69 screwing into these guide portions and against the rods 67, serving to hold the latter in lengthwise adjusted position. The outer endsot' the rods '67 vare connected together by means of a cross-bar 70 `from which rises, the upright, parallel, bars 7l connected together at their upper ends by a cross-piece 72. The rods 71 provide a guiding support for .a frame 73 provided at y.its opposite edges with `upper and flower Vsets require, in the of grooved rollers 7 a journaled thereon and between which the upright rods 7l extend, the Vframe 73 being` movable np and down on the rods 7l atthe rollers 74. The frame 73 is term-ed at its .upper end with a yokeshaped portion 75 which extends substantially horizontally, the arms or the yoke, which are represented at 76, extending in a direction toward the table top, and the crossbar 77 oi' the yoke extending lengthwise of the table top. Located within the yoke 75 and pivotally supported on the arms 76, at the pins 78, Ils a member 79 provided along one edge with a lug80 which extends directly beneath the cross-bar 77 and serves as a stop, when engaging the underside of the cross-bar 77, to prevent .the member 79 from rotating in'one direction, beyond a predetermined point. rlhe member79 is provided with an extended portion 81 forming a support for a bearing member-"82, the latter being pivotally connected therewith, by 'the pivot pin 83 which extends in a plane transverse to the axis about which ythe member 79 is movable. The bearing member 82 contains a slot 84 extending lengthwise thereof and into which a ournaling portion 85 o-a yoke-shaped frame 86, extends and is journaled, to adapt the frame 86 to pivot 0n the member 82, the journaling portion 85 being located midway between the arms 87 of the trame 86. The screen 65 extends at one end into the yoke 86 as shown, the extremities of the arms 87 preferably reaching to a point substantially midway between the ends of the opposed sides of the frame 66 and with which the latter is pivotally connected, as by the pivots 88, to adapt the screen to be rocked in the frame 86.

From the Aforegoing it will be noted that the screen is connected with the fra-me 7 3 in a manner to permit the screen to have vuniversal movement on this frame, adapting the lscreen to be moved into any position desired by the operator, as conditions may observing o'l the patient `to the greatest advantage, the feature of at'- ording the pivot 83 being oi' advantage as it enables the screen to be adjusted into dif- Vferent angular positions in a plane or planes extending substantially parallel with the table top, one of the positions to which it may be adjusted being shown in Fig. 8, and thereby enhancing'theield of vision afforded by t-he screen, presented by the screen when it extends at right angles to the median line of the table top. The pivoting of the member 79 on the frame 73, at the pivot 78, adapts the member 79 and the parts carried thereby, to be swung upwardly and to the right yin Fig. 2 into a position in which the screen is removed from a lposition directly above the table top,

'which is desirable when the apparatus is Mused -or radiographic work. The vertical as compared with the field Sio adjustment of the frame 73 on the rods 71 adapts the screen to be raised and lowered relative to the table top, as conditions may require, the location of the parts carried by the frame 73, being to one side of the plane of the rollers 7 t, operating to exert suilicient friction between the parts to hold the frame 73 and the parts carried thereby in vertically adjusted position.

Means are provided for substantially counter-balancing the carriage 37 and t-he various parts carried thereby, as hereinbefore described, in order that this carriage, with the parts thereon, may be shifted with ease, into different positions lengthwise of the table, regardless of the position occupied by the table in the adjustment of thel latter on the trunnions 48, the particular construction of counterbalancing means for the purpose stated, and shown in the drawings, comprising two sets of pulleys 89 and 90 journaled at the under side of the tabletop toward its opposite ends, as represented, cables 91 and 91a, each of the cables 91 connecting at one end, as indicated at 92, with the carriage 37 and a weight structure represented generally at 98 and in the forni of a holder to the ends of which one end of each of the cables 91a is attached, as indicated at 94, the cables 91 connecting at their other ends with the ends of the holder 9B, as indicated at 93a and the other ends of the cables 91L being connected with the carriage 37 at the end thereof opposite that at which the cables 91 connect therewith, as indicated at 92a. The cables 91 from their points of connection with the carriage 87 extend lengthwise of the table in a direction toward the left-hand side of Fig. 4e, thence extend partway around the pulleys 89 and thence in the opposite direction, lengthwise of the table. rlhe cables 91n extend from the points of connection 94. with the counterbalancing structure 93 to the right in Fig. 4i, thence partially around the pulleys 90 and from the latter to the left in this figure to their points of connection with the carriage 87 at 92". By virtue of the connections just described, the carriage 87 and the parts car ried thereby, and the counterbalancing structure 98, move lengthwise of the table in unison, but in opposite directions, to perform the counterbalancing function.

The counterbalancing structure 93 is shown as formed of a U-shaped section 95, which may be a sheet of metal bent into the form shown in Fig. 5 to provide the legs 9G which extend parallel with each other, and the cross-connecting portion 97, this holder section being adapted to have applied thereto the weights represented at 98 and shown as extending parallel with each other and in spaced relation and be secured to the holder section 95, as by means of bars 99 extending crosswise of the weights 98,

the bars 99 preferably having lips 100 at their ends at which they overlap the outer sides of the weights 98, and be secured in position to prevent displacement of the weights, as by means of the bolts represented at 101 shown as extending thru the portion 97 with which the heads of the bolts engage, and at their threaded ends thru the bars 99, nuts 102 being screwed upon the threaded ends of these bolts and against the bars 99 for holding the weights 98 in place.

The holder section is provided at each end with three rollers 103 10d and 105, the rollers 101i being located between therollers 108 and 105, and offset therefrom, shown more particularly in l(1 ig. 5, these rollers being disposed at opposite sides of guide bars 106 shown as parallel and extending lengthwise of the table structure and forming guides along which the counterbalancing structure is movable, the rods being secured at one end to the end cross-frame 251i, at the right-hand end of Fig. d, and at the opposite end to a cross-bar 107 secured to the side members 32 forming a part of the frame of the table-top.

The connection between the X-ray tube, which is of the so-called hot filament type, in the particular construction illustrated, and the source of low potential current 'f and high potential current may be in accordance with `common practice, the representation in the drawings, of such connections, being somewhat diagrammatic. ln

this connection, it may be stated that the 1 cathode end of the tube, which is at the right-hand side of Fig. 1 and which includes the hot lilament referred to, is connected with two wires represented at 108 and 109 which lead thru an insulator tube 110 extending lengthwise of the table and supported in a position below the tube-holder in depending brackets 111 carried by the plate 50, these wires leading thence into one of the hollow masts 21there being preferably interposed in these wires, in accordance with common practice, reel devices (not shown) carried by the main frame of the apparatus and operating' to automatically take up any slaclr in the wires and still permit the wires to pay out in the movement of the various parts of the apparatus, without disturbing the circuit connections. A high potential wire, represented at 112, leads from the anode end of the tube, shown as equipped with a radiator, into the otherl one of the masts 21, this wire alsohaving a reel device (not shown) interposed therein and functioning as stated of the reel devices above referred to. The two wires 108 and 109 connect with any suitable source of low potential current and the wire 112 and one of the wires 108 and 109 connect with any source of high potential current.

The apparatus as shown is adapted, as

llt)

Cil

hereinbetore stated, for radiographic work, and to this end provision is made for supporting an X-ray tube in position above the table top and adapting it to be moved along the latter and providingl other movements of the tube desirable for the production of radiographs under the various conditions presented in practicerIhe tube-supporting mecha;V ism just referred to is shown as formed ot an uprighttubular member 113 and tube-holding mechanism represented at 114iwhich engages the member 113 and has movement vertically thereon, the mechanism 1141 being controlled by counterweight mechanism on the upright 113 the cable ot which, represented at 115, connects with the mechanism 11e and with a counterweight (not shown) vertically movable in the upright 113, the mechanism 11d, which supports an X-ray tube represented at 116, pro,g viding Ytor movement ot this tube crosswise ot the table, and also tor a variety of roching movements. 'I he tube-supporting mechanism referred to as shown is otl the general construction shown and describedA in United States Letters 13a-tent lilo. 1,239,145 granted to me September Ll, 1917, and theret'ore detailed description oi this mechanism is not necessary.

[Ehe column member be movable along the table, on the bars 2% and 25, and to this end is provided at its lower end with a head 117 equipped with peripherally grooved rollers 118 and 119 vertically spaced apartand rollingly engaging the bar 25 at its upper and lower portions, respectively, and between its ends *ith a head 120 equipped with rollers 121 and 122, which rollingly engage the bar 2lat opposite portions ot the latter, as shown.

The table top is shown as adapted to receive the insitized plates for the making ot the radiographs, the arrangement shown providing t'orthe insertion of the plates to posit ion on the table top by telescoping them therewith from a side ot the table. To this end the table top, shown adapted for supporting two plates disposed in a series eX- tending lengthwise oit the table, is provided with plate-holder-receiving grooves 123 which extend crosswise oli the table top,

these grooves being vprovided in the end trame member 34k, the cross member 107 and in a cross'meinber 124 located midway` ot, parallel to, the members 34 and 107, the niember 124; being pivotally 113 is supported, to

connected at one end, as represented at 125, to a bracket 126 connected with one of the side bars 32 and containing in its opposite end a springpressed plunger 12.7 adapted to enter an opening in a lug 128 on the tabletop when the member 12e occupies the position shown in Fig, Al, each of the members 34 and 10,7 containing one ot1 the grooves 123 which open toward eachv other, and the member 121i them, transversely of the table,

containing two ot these grooves which are parallel with the grooves in the members 341 and 107 and open toward the latter, respectively. The members 34, 107 and 124 are provided, intermediate their ends, with lugs 129 disposed below the plane of the grooves 123 and extending laterally thereof, as shown, these lugs 'forming supports for the inner ends of leatl springs 13.0 which are connected at their outer ends with lugs 131 on, and extending laterally from, the members 34, 107 and 1241-, these springs, which are upwardly bowed between their ends as shown, extending parallel with the members 3d, 107 and 124 and. extending into the path ot plate-holders represented at 132 and carrying the sensitized plates, the one shown being represented .at 13,3 (Fig. 6) these plates 'being held in place on the holders 132, by clips 134i located at the corners lot the plates. From the foregoing it will be readily understood that the plate-holders 132, with the plates 133 therein, are introduced to position into the table by sliding into the opposed grooves 123 and against the upper surfaces ot the springs 130 .beneath them. The cross-bar 124i is pivotally supported, as stated, to adapt it to be bodily swung on its pivot 124i into a position in which it generally parallels one ofthe side bars 32 of the apparatus (see Fig. 7 in which posi'- tionwitfoffers no obstruction to the passage ot the rays from the tube, beneath the table, into the patient above the table, in theuse ot the apparatus for iluoroscopic work. rlhus the table top, while being provided with cross guides for the sensitized plates in connection with radiographs, may be used to the maximum advantage in tluoroscopic work.

Thile I have illustrated and described a particular construction embodying my invention, I do not wish to be understood as intending to limit it thereto, as the same ma i be various modified and altered without ldeparting from the spirit ot my inn ventioii.

What I claim as new, and desire to secure by Letters Patent, is

1. In an X-ray photographic and fluoroscopic table comprising a stand, a patients support havingv a transversepivotal mounting in saidA stand, a fluorescent screen on the upper side of said support' and movable therealong, and a tube-supporting' member and tube at the opposite and under side ot said support and adapted to be moved lengthwise thereof, said tube-support ig member having a tiltable tube holding portion adapting saidv tube and tube holding' portion to adjustment singularly to said patients support and to said screen.

2. An Xrfray photographic and nuoroscopic table comprising a stand, a patients support transparent to K-light transverf'sely journalled in said stand and adapted to be moved in a vertical plane, a track upon the under side of said support, an X-ray tubesupporting member upon said track, and an X-ray tube in said member, said member having a tiltable tube-holding portion adjustable angularly to said support whereby Xdight from said tube may be made to pene` trate said support at angles other than right ai'igles.

3? An X-ray photographic and fluoroscopic table comprising a stand, a patients support movably secured to said stand and provided With a track running beneath said support, an X-ray tube-supporting element upon said track, said element being` adapted to be moved with said support in the adjustment of the latter and having a tiltable section for holding an l-ray tube, an Xray tube in said element and tiltable therewith, a fluorescent ,screen mounted upon the opposite side of said support and adapted to be freely rotated in its mounting` in a plane parallel. to said support, and means for etfecting a simultaneous movement of said screen and said tube-supporting element longitudinally of said table.

4. An X-ray photographic and fluoroscopic table comprising a stand, a patients support journalled in said stand, a track beneath said support and in juxtaposition thereto, an :fi-ray tube-carrying element on said track and provided with a ti'ibe-engaging portion tiltable relatively to said support, an X-ray tube in said portion and tiltable therewith, a luorescent screen, a supporting means for said screen in juxtaposition 'to said support, and means for effecting the simultaneous movement of said screen-supporting means and said elcmem', said tube and tube-engaging portion being adapted to be tilted angul arly to said screen..

5. The combination. with an X-ray photographic and fluoroscopic table comprising a stand, a patients support movably mounted in said stand and having a track therebeneath, an X-ray tube-supporting member upon said track, a fluorescent screen at the opposite and upper side of said support, means for eiiecting the simultaneous morement of said tube-supporting member and of said screen longitudinally of said support, and a single eounterbalancing means for said member and said screen, of a tubeholding portion upon said tube-supporting member, and a tube therein, said supporting member admitting of the tilting ot the tube angularly to said patients support-and to said screen.

6. The combination with an X-ray photographic and uoroscopic table comprising a stand, a patients support movably mounted in said stand and having depending track :useable portion, an X-ray tube-supporting member disposed on said track and movable length- Wise of said support, a fluorescent screen at the opposite side of said member and movable lengthwise of said support, and means for moi/ing said screen and said member transversely of said support, ot a holding portion for an li-ray tube disposed in said member and tiltable therein, and a tube in said holding portion.

7. An Xaay photographic and iiuoroscopic table comprising a stand, a patients support movably mounted in said stand and having a depending track portion, an X-ray tube and a tube-supporting member disposed in said track and movable with said support in the adjustment oli' the latter to different positions, said member comprising a tube holder1 tor said tube conjointly movable angularly With said tube with respect. to said patients support and lengthwise thereof, a standard for a fluorescent screen, and a fluorescent screen on said standard and on the opposite side of said support and also movable lengthwise thereof, said screen being freely movable on said standard in a plane parallel to said support.

8. In a fluoroscopic table, the combination of a patients support, a holder for a fluorescent screen longitudinally movable on said patients support, and a Fluorescent screen mounted upon said holder, said holder comprising standards perpendicular to the top of said patients support, a yoke slidable on said standarcs and having a portion projecting in the direction of said table top to provide a support for said screen, said screen being pivotally supported on said yoke whereby to provide for free rotation of said screen in a plane parallel to said patients support. I

9. In a iiuoroscopic table, the combination of a stand, a patients support movably mounted on said stand, a carriage for longitudinal movement on said support, a standard :for a fluorescent screen secured to said carriage and having a portion extending in the direction or said patients support, a holder for a fluorescent screen pivotally disposed upon said inwardly extending section of said stand rd, and a fiuoroscopic screen tiltably disposed in said holder said holder and screen being adapted to bo moved in a plane parallel to said table top.

l0. In a iiuoroscopie table, the combina-- tion of a patients support, a carriage for longitudinal and transverse movement parallel to said support, a standard upon said c ge and perpendicular to the top or". said pa Aentis support, a yoke slidably disposed upon said standard and having an end with an inwardly extending section, a tilt-able cross bar in said end, a fork pivotally disposed. upon said cross bar, and a fluorescent Cri screen vdisposed in said fork 'and adapted to be freely moved over said top in a plane parallel thereto.

ll. 1in a tluoroscop'ic table, the combination of a stand, a patients support movably mounted in said stand, a track` under said support, a standard for a fluorescent screen disposed on said track, a fork therefor, a fluorescent screen tiltably disposed in said fork, and connecting means intermediate said standard and said fork comprising a yoke adapted: to be moved upon said standard and having a tiltable part disposed at one end, and a Ale element lfiaving two parts, one part being disposed upon said tiltable part andthe other at the end of said fork, the said: connection between said fork and said standard admitting of said screen being freely moved on an axis adapted to be adjusted from the perpendicular to transverse of said table t`op.

l2. lin X--ray photographic and ilu-oroscop'ic table comprising astand, a patients support in said stand` and having a depend-- ing track parallel to the topI of said table, an X-ray tube-supporting member on said track and adapted to be moved lengthwise of said support, a tirbe-holdingportion securedk in said' member, X-ray tube in said holding portion, a fluorescent screen at the opposite side of said patientsqsupport and disposed in a standaard perpendicular to the top of said' tab-lc and movable on said track, and connecting means intermediate said standard and said tube holding member for simultaneous movement lengthwise of said support, said standard having a section perpendicular to said tablel top, a yoke movable up and down said perpendicular section, a tilt-able part at the inner end of said yokel a ferk for said screen, and a slip joint intermediate said yoke and. said fork.

13. Ain X-ray photographic and fluoroscopic table comprising a stand, a patients support journalled upon said stand and adapted-to be moved in a vertical plane, a track depending from said support, X-ra'y tube-supporting member upon said track, a fluorescent screen at the opposite side of said support, and a standard perpendicular' to the' top of said table for said screen and including a plurality of adjustable connecting means adapting said screen to perpendicular, lateral, longitudinal, and angular` to said support and` adjustments relative free rotative movement upon axes perpendicular and parallel thereto, said adjustment means comprising a member sliidable upon said standard and having a` pivoted part disposed therein, and a fork for holdingsaid screen and .journalled in a memberk secured to said pivoted part and. comprising faces adapted to be adjusted relatively.

14:. An X-ray photographic and fluoroscopc table. comprising a stand, a patients support jiournall'ed in said stand and provided With a track therebeneath and running lengthwise thereof, and an X-ray tube and tubevsupporting element upon said track mounted for movement thereon and movable with said support in the adjustment of the latter, saids element comprising a shield support, and a shield tiltablfy mounting said tube inf said support, said shield being of a generally uniform thickness of material opaque to X-rays and in close proximity to said tubel over its entire extent.y

l5; An. X-ray photographic and fluoroscopc table comprising a sta-nd, a patients support ournalled upon said stand, a track s.

beneath said support and parallel thereto, an ff-ray tube-carrying element movable on said track. and provided with tiltable tube supporting members, and an X-ray tube, said tube and tube-supporting members being roc'kingly movable on an axis parallel to said patients support, and said tube-sup portingv members comprising a shield of sections of material opaque to X-rays of a generally circular configuration at their ends to provide fo-r their support in said element.l

l 16. An X-ray photographic and fluoroseopic table comprising a stand, a patients support journalled. in said stand and having a depending track thereon, an X-raytubesupporting 'member disposed upon said track and provided With shield engaging portions adaptedtozbe rocked in said member, a shield ofmaterial opaque to X--rays disposed on said member, the material of which is in close proximity to atube, an X-ray tube, and a single counterbalance for said member and the parts carried thereby.

, i7. An X-ray photographic and fluoroscopic table comprising a stand, a patients support journalled in said table and adapted to be moved in a substantially vertical plane,

said support being provided with a depending track portion, an X-ray-tube-supporting member disposed on said track beneath saidv support and movable lengthwise of said sup-v port, a shield of material opaque to X-rays for enclosing a tube, a tube Within said shield, shield holding means upon said support and adapted to be tilted relatively thereto, and a single counterbalance for said tube supporting member and the parts carried thereby, vsaid shield 'comprising sections of a material of substantially uniform thickness arranged in close proximity to the Walls `of the enclosed tube and being of the same general. contour as said tube, each end of said shield comprising aV cylindrical portion for providing bearings for the movement thereof. j

18'. An X-ray photographic and fluoroscopic table comprising a stand, a patients support journalled said stand and having a depending track portion, an X-ray tubesupporting member disposed in said track,

llU

" screen and said tube supporting element.

19. ln a fluoroscopic table, a stand, a patients support journalled in said stand, an X-ray tube, and a fluorescent screen mounted at the side of said support 'for tree rotation in a plane parallel to said support, said screen extending' across and being adapted to be moved lengtl'iivise ci.' and tilted angularly to the surface of said patients support, said screen being connected to said support a plurality or' adjustable means comprising a sectional standard adapted to telescope, and a fork in which said screen is tiltably disposed and having a friction joint connection with one of the sections oit said standard.

20-ln a luoroscopic table, a stand, a patients support journalled in said stand and adapted to be moved in a vertical plane, an X-ray tube, a fluorescent screen, and means for mounting said screen upon said support, said mounting neans tor said screen comprising a standard at the side ot said support, a yoke adapted to telescope on said standard and having a ifriction joint member pivoted therein, and fork journalled in said friction joint member and in Which said screen is tiltably disposed.

2l. ln a iiuoroscopic table, a stand, a patients support journalled in said stand, a carriage movable parallel to the top of said support, a screen standard movable With said carriage, a fluorescent screen, and connecting means intermediate said standard and said screen, said connecting means including a part terminating in a tiltable member and providing a support for one part ot a slip lioint, and a part supporting said screen and journalled in the other halt of said slip joint, said tiltable member having means limiting its movement beyond predetermined angles.

22. in. a fluoroscopic table, a stand, a patients support journalled in said stand, an X-ray tube, holding means tor a iiuorescent screen on said support, and a fluorescent screen in said holding means and having a universal movement relatively to said patients support, said holding means comprising a standard, a carriage perpendicularly adjustable thereon, a screen supporting member in which said screen is rockingly disposed, and a connect-ing member having a plurality of slip joints, the planes of the abutting faces of which are perpendicularly disposed.

23. A combined fluoroscopic and radiographic table comprising a stand, a support transparent to X-rays mounted in said stand and having plate holding tracks upon one side thereof. one ot' said tracks being angularly movable from engagement with said support to enlarge the ield of iuoroscopic vision.

A radiographic and luoroscopic table comprising a stand, a patients support transparent to X-rays thereon, and cassette holding members disposed on one side of said support, the outermost of said members comprising` track port-ions and being permanently secured to said support, and the to be disposed in a manner not obstructing 'f' the field oit' tluoroscopic vision of said support, said pivoted member when parallel to said fixed members cooperating therewith to hold a plate in photographing position on either or-both sides thereof.

26. An X-ray photographic and fluoroscopic table comprising a stand, a patients support ournalled upon said stand and having a longitudinal track, an X-ray-tube-supporting member adapted to be moved length- Wise of said support on said track and conjointly movable with said support in the adjustment of the latter, a fluorescent screen at the opposite side of said support and disposed upon a standard, means connecting said screen standard and said tube-supporting member one to another for simultaneous movement lengthwise of said support, said tube supporting member comprising a tube holding portion disposed thereon for axial movement admitting of said tube being moved independently o'l the movement of said screen standard and tube supporting means.

2"?. An X-ray photographic and fluoroscopic table comprising a stand, a patients support journalled upon said stand, a track depending from said support, an X-raytube-supporting member upon said track, a fluorescent screen at the opposite side of said support, and means for eliecting a simultaneous movement of said tube supporting member and said screen, said X-ray-tubesupporting member comprising'a frame, a tube holding section tiltably mounted in said movement thereon, saidy element including tube holding members upon said a trame, trame, a shield rockinglyl disposed in said members, and a tube, a standard at one side` aitiltable part ot said support and having adapted to support a screen for;` means tor connecting` said tube supporting element and said standard tor simultaneous movement, a`

tork- 'for said screen journalledY in said tiltable' part, and a Afluorescent screen tiltably disposed in said.v fork, said screenv and said ytube each being adapted tobe rocked on axes parallel to said support.

29. An X-ray photographic andy fluorostand, a` patients scopictable comprising a stand.4 av track besupport disposed in said neath said support andi X-ray-tube carrying element movable on said track and comprising a body, a track, spaced supporting members, a tube holding portion, the latter being adapted to be rocked in said supporting member', a tube, a screen holding standard on said support, means Afor colmecting said standard and said tube carrying element one to another tor simultaueous movement lengthwise and crosswise ot said support, and a fluorescent screen disposed on said standard.

30. An X-ray photographic and liuoroscopic table comprising a stand, a patients support upon said stand and having a depending track parallel thereto, an X-ray tube supporting member on said track having` a section movable lengthwise of said support and a second section adapted to be moved transversely ot said first mentioned section, the latter having tube holding members, a tube enclosing portion in said members and adapted to rock therein, and a tube` a standard tor a liuorescent screen movable lengthwise and crossivise ot said support. means 'for effecting the simultaneous movement ot said member and said standard lengthwise and crosswise oli said support. and a fluorescent screen disposed in said standard.

3l. tu X-ray photographic and fluoroscopic table comprising a stand, a patients support upon said stand and having a depending; longitudinal track thereon, an X- ray tube supporting member upon said track and having a rail section, a body portion movable transversely ot' said support on said rail section, a portion tor holding a tube casing, al tube casing tiltable therein, and a tube, a standard upon said support adapted to axially support a screen and movable parallel thereto, an

lengthwiseo't said patients support,.means 'for eltecting simultaneous longitudinal'y and; ransverse movement vot said member and; standard. and a screen tiltably disposed in said stan lard the axis ot revolution ot said? screen being in aplane parallel'to the maximum dimension ot the vpatients support.

32. An X-ray photographic and' fluoroscopic table comprising a stand,a patients support upon said stand, a. track arrange parallel tosaid support, an X-ray. tube supporting member movable on said track and comprising a section having transverse rails, a body section movable upon said transverse rails, and a tube holding element pivotally. secured to said body and adaptedy to permit the rocking ot said element and of a tube therein relatively. to said support, a standard upon said stand and movable lengthwise and laterally of said support, anda fluorescent screen in saidstandard'.

38. An X-ray photographic and iiuoroscopic table comprising a stand, a patients support in said stand, a longitudinal track upon; said supporuan X-ray tube supporting member upon said track, said member comprising a rail portion adapted to be moved longitudinally of said support, a body portion disposed upon said rail portion and movable transversely ot said support, and a tube holding element pivotally secured to said body and adapting a tube contained therein to be rocked concurrently therewith, and a fluorescent screen and standard therefor upon the opposite side of said support, said standard and saidv tube supporting member being relatively adjustable in a direction crossWise ot' said support.

34. An X-ray photographic and fluoroscopic table comprising a stand, a patients support upon said stand, a track upon said support and parallel thereto, an X-ray tube supporting` member on said track and comprising a rail section, a body portion adjustable upon said rail section, and a tube holding element pivotally secured to said body, a standard at the opposite side ot said support .and comprising a plurality ot vrelatively adjustable sections, a fluorescent screen on said standard and supported upon one of said sections, and mea-ns for effecting simultaneous movement of said member and said standard lengthwise ot said support, said sections being joined one to another to provide universal movement for said screen.

An X-ray tluoroscopic table comprising a stand in which an X-ray tube is disposed, a patients support upon said stand, a standard upon said support including sections eiitending over and beneath said patients support, and a fluorescent screen mounted upon said standard, said standard comprising sections telescoping upon one another, a tiltable member in one of said sections, a slip joint connection disposed ony said tiltnble member, and a yoke journalled in one of the parts ot said slip joint and adapt-ing said screen to be rotated in n plane parallel to the plane oiP said pntients sup port und with its surface at an angle to the surface of said support or to be tilted away from seid pntients support.

36. An X-ray luorosc'opie table comprising a stand. an -rny tube disposed in said stand, a patients support upon said stand, n standard :it one lside ot' said support romprising a. pluralityY of 'freely movable seetions and ay fluorescenty screen di."-:posed in ssiid standard, movement ot said standard and relative adjustment oi said sections adapt.- ing said screen to be moved lengthwise and erosswise of said Support and in planes at angles to the plane. of said support the axes of such angular movements being perpend ieular to and transversely und longitudinally parallel to said pzitients support. said adjustable sections including` telesoopiim` parts, e pivoted slip joint on one ofi sind parts, and a. fork tiltably holdin g said screen and journalled in one part of said slip joint,

37. An )il-ray fiuoros'eopio table Comprisn standard movnbly mounted upon said Support :it one side thereof und adapted to extend above said patients support. and n fluorescent screen disposed at a point substantially midwayr its length in said standard and adapted to rook thereon, said standnrd comj'irisingr n plurality ot sections: joined together to provide 'free relative movement, one of seid sect-ions being adapted to telescope upon another land having; at ite upper ond. u tiltnble support. and. another of said sections tiltably holding;` said Screen and being journalled .in e friction disk member disposed upon said tiltable support7 said screen beingV adapted to move in said. stundnrd in directions perpendicular.v latereb longitudinal, and :it :ingles to snid support, the annular movements oil said. screen including movements upon :L plurnlitjT of n-Xes parallel to said support and upon nnv axis perpendicular thereto.

JULIUS B. lVANTZ. 

